Orplid TK
Type 4
yellow / Au 70.0
palladium-free
| Composition: | Au 70.0 / Ag 13.6 / Cu 9.9 / Pt 5.5 / Zn 0.9 / Ir 0.1 |
| Standard: | DIN EN ISO 22674 |
| Colour: | yellow |
| Melting range °C: | 895–925 |
| Soft annealing: | 15 mins at 750 °C / quench in water |
| Hardening: | 15 mins at 450 °C / air |
| Preheating temperature °C: | 700 |
| Casting temperature °C: | 1055 |
| Further heating after melting (secs): | electr.: 15–20 inductive: 5–8 flame: 5–8 |
| Density g/cm3: | 15.4 |
| Solders: | Orplid solders 825, 790, 760 |
| Vickers hardness (HV 5/30): | w: 190 a: 255 g/b: 250 |
| 0.2% proof stress (MPa): | w: 375 a: 620 g/b: 645 |
| Elongation at break (%): | w: 35 a: 15 g/b: 10 |
| Spruing: | Following the rules for dental applications (see General Instructions for Use) |
| Investment: | Phosphate-bonded investment materials |
| Preheating: | 700 °C, 30 to 120 mins until end temperature, depending on size of mould |
| Casting: | 1055 °C, possibly increase by 20°C–30°C for resistance-heated vacuum pressure casting. Graphite crucible or open flame with ceramic crucible. |
| Finishing: | With carbide burs and/or ceramic-bonded stones |
| Cleaning: | Ultrasonic cleaning or steam jet cleaning |
| Soldering: | Orplid solders 825, 790, 760 |